Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
For sale: 1. H&M dress New 500 din 2. Only dress (bought on Asos) Worn a couple of times 500 din All in excellent condition Material polyester Size M-L Buy-try on Grbavica district
For sale: Vans size 39, slightly torn by a cat, worn a couple of times. 5000 rsd Sneakers from H&M Size 38, worn a couple of times. 2000 rsd salaika, center by agreement
